Abstract
Dry sliding wear behavior of LM24 cast alloy reinforced with garnet particulate composite against EN32 steel disc was investigated, using a pin-on-disc tribometer. Experiments were carried out with sliding velocity ranging from 1.0 to 3.0 m/s, different load conditions from 20 to 80 N, and with a constant sliding distance of 3000 m. Samples were prepared with different weight percentage of garnet in the alloy varying from 3% to 15% in a step of 3 wt% prepared by liquid metallurgical technique. Scanning electron microscopy was used to realize the distribution of reinforcement in the matrix material and mechanism of wear. Experiments showed that the 15% garnet composite exhibited lower wear rate at all applied loads. The wear resistance was better at low loads and mild to severe wear was exhibited when load/sliding velocity was increased.
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